Added code to skip reloading of pages that are currently loading. New tabs open with the 'completed' status. Any tabs with the 'loading' status are probably not new tabs, and therefore, should not be reloaded when moving to another window.

Discovered that when tabs are 'attached' to a different window, the target window does not receive focus. By utilizing the 'windows.update' api with '{ focused:true }', the target window gets the expected mouse/keyboard focus. Combined with the original workaround idea, this fixes the issue when moving new tabs between existing windows, and to a newly create window.